15 Dec
2021
15 Dec
'21
8:58 p.m.
On 12/14/21 2:43 AM, Kamil Adiloglu wrote:
Dear group,
I would like to use alsaplayer via jack to play 3-channel audio files.
These audio files will be routed into a real-time capable signal
processing platform the open master hearing aid (openMHA).
An option not mentioned yet in the thread is ecasound, I routinely use
it as a command line multi-channel player - it is a very good jack
client. Ecasound can do a LOT more than just playing back soundfiles.
-- Fernando
However, I
cannot route the third channel to jack. I try to start alsaplayer as a
daemon with the following command
alsaplayer -i daemon -s PHL -o jack -d MHA:in_1,MHA:in_2,MHA:in_3 -F 16000
However alsaplayer returns and error saying
cannot connect output port 2 (MHA:in_2,MHA:in_3)
Actually MHA:in_2 should be the output port 2 and MHA:in_3 is ment to be
the output port 3.
I first start the openMHA software so that it establishes 4 input and 4
output connections via jack with the sound hardware. I can see the
connections on qjackctl connections window.
I have a sound card that has 8 input and output channels and the openMHA
is configured to expect 4 input channels and produces 2 output channels
and already mentioned. So, the problem is neither on the MHA side nor on
the hardware. I am afraid that I cannot configure the alsaplayer
correctly that it expects three (or more) output ports. I would
appreciate any help from your side. Thank you in advance.
Best regards,
Kamil
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